Roof bit



FIG. 1 is a top isometric view of a roof bit showing our new design;

FIG. 2 is a bottom isometric view thereof;

FIG. 3 is side view thereof;

FIG. 4 is another side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines in the drawings depict unclaimed environmental subject matter. 

CLAIM The ornamental design for a roof bit, as shown and described. 